The level shifter shouldn’t be necessary, but as @John93 has said, you can’t reliably operate 8 relays from a NodeMCU without a multiplexor device.
You should probably take a look at this:
Pete.
The level shifter shouldn’t be necessary, but as @John93 has said, you can’t reliably operate 8 relays from a NodeMCU without a multiplexor device.
You should probably take a look at this:
Pete.